About

A private place to meet the sky.

Learn how Cosmic Meridian turns a chosen moment into browser-local chart and sky views, and where astronomy ends and symbolic reflection begins.

Cosmic Meridian sets a chosen moment against the real sky. Astronomy Engine casts it live in the browser — tropical, geocentric — as a natal chart, synastry, transits, Sky Now, a calendar, or a daily sign. The Astronomy Engine project documents the positions, coordinate transforms and sky events its library supports.

What the calculation means

A chart is a map of celestial positions for a chosen moment. A verified time and a location let the workspace calculate angles and houses; when the time is unknown, it says so and uses a neutral midday placeholder. Sky Now asks the device for location only after you choose it, and keeps it inside that calculation.

What it does not claim

The visual language, forecasts, and star symbolism are invitations to reflect — not facts about a person, a guarantee, or medical, legal, financial, safety, or mental-health advice. Use the astronomical data for curiosity and observation, and make important decisions with appropriate real-world information.

Private by design

There is no account and no saved chart history. Birth details, coordinates, and results remain in the browser. Aggregate cookieless page-view measurement never receives those inputs.

Data

City search uses the GeoNames gazetteer (CC BY 4.0, https://www.geonames.org/) bundled with this site; no lookup leaves your browser. Pre-1970 civil time in 15 zones — mostly the Low Countries, Scandinavia and the former Yugoslavia — comes from the IANA tzdata backzone file (public domain, release 2025c), compiled into the site.